Glad I could help with the angle calculation. Here is something to consider. If you are not currently using the A axis you can make use of it. The A axis is rotation about the linear X axis and uses DRO 803. You can set the A axis to be active, write a value into the A axis DRO and then when you leave the script it will be there for you to see on screen.
There is also the option to do the angle calculation in Gcode using G31. When you probe using G31 the values of X Y and Z at the probing point are written to parameters #2000, #2001, #2002.
For example set up parameters
#50 = 0 (X axis change)
#51 = 0 (Y axis change)
#52 = 0 (Z axis change)
#53 = 0 (slope)
#54 = 0 (angle)
#1000 = 0 (temporary variable)
#1001 = 0 (temporary variable)
#1002 = 0 (temporary variable)
So go to your first probing point, set your own temporary variables to the values at the probing point.
#1000=#2000? #1001=#2001 #1002=#2002
Go to your second probing point then the X axis movement will be given by:
#50 = #2000 - #1000
#51 = #2001 - #1001
#52 = #2002 - #1002
You can then calculate the angle of the probed face as you do in the script from #53 = #52 / #50
Then the Taylor series calculation for the angle
#54 = etc putting #53 in instead of the variable slope.
